1 // Set iterator invalidation tests 2 3 // Copyright (C) 2003-2020 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // You should have received a copy of the GNU General Public License along 17 // with this library; see the file COPYING3. If not see 18 // <http://www.gnu.org/licenses/>. 19 20 #include <debug/set> 21 #include <iterator> 22 #include <testsuite_hooks.h> 23 24 using __gnu_debug::set; 25 using std::advance; 26 27 // Erase test02()28void test02() 29 { 30 set<int> v; 31 for (int i = 0; i < 20; ++i) 32 v.insert(i); 33 34 // Single element erase (middle) 35 set<int>::iterator before = v.begin(); 36 set<int>::iterator at = before; 37 advance(at, 3); 38 set<int>::iterator after = at; 39 ++after; 40 v.erase(at); 41 VERIFY(before._M_dereferenceable()); 42 VERIFY(at._M_singular()); 43 VERIFY(after._M_dereferenceable()); 44 45 // Multiple element erase 46 before = v.begin(); 47 at = before; 48 advance(at, 3); 49 after = at; 50 advance(after, 4); 51 v.erase(at, after); 52 VERIFY(before._M_dereferenceable()); 53 VERIFY(at._M_singular()); 54 55 // clear() 56 before = v.begin(); 57 set<int>::iterator finish = v.end(); 58 VERIFY(before._M_dereferenceable()); 59 v.clear(); 60 VERIFY(before._M_singular()); 61 VERIFY(!finish._M_singular() && !finish._M_dereferenceable()); 62 } 63 main()64int main() 65 { 66 test02(); 67 return 0; 68 } 69